Improvement in argawd lamps



E. F.' A. HINRBHS 8L B. KNUFF.

Argand Lamps.

Patented Dec,24,1872.

j! ed am,

CHARLES F. A. HINRIOHS, OF BROOKLYN, AND RUDOLPH KNOPI, OF NEW YORK, N.Y., ASSIGNORS TO SAID HINRIGHS.

IMPROVEMENT IN ARG/AND LAMPS.

Specification forming part of Letters Patent No. Bt/,Qll, dated December24, 1872.

-DOLPH KNOPP, of the city of New York, both in the State of New York,have invented an Improvement in Argand Lamps, and the following isdeclared to be a correct description of the same. y

In Argand lamps that are supplied from an elevated fountain, a dangersometimes arises from the oil becoming too highly heated, and the tubeleading to the fountain conducting heat toward the same, so as togenerate vapors. We prevent this by introducing water into the lowerportion of the wick-tube in such a manner as to separate the petroleumthat is being consumed through the wick and that in the reservoir, butsaid water allows the coal-oil to pass through the same gradually toreplace that which Iis consumed. In many Argand burners there is a riskof the thimble upon which the wick is placed becoming separated from thetube that is employed for revolving the same, and screwing it up or downupon the threaded air-tube. In'this case it becomes difficult to elevatesaid thimble from the bottom of the wick-tube. Wie prevent this bymaking ahead upon the pin that passes through the slotted tube employedfor revolving the same, and the slot in this tube is closed, both at thetop and bottom, and an enlargement is .provided in the slot to allow thehead of this pin to pass through.

In the drawing, Figure l is a vertical section, and Fig. 2 is asectional plan of the wicktube and thimble at the line :c fr.

a is the central air-tube united at the bottom with the cyliuderb orwick-tube, so asto form an annular space for the burnin g-liquid, whichis supplied through the tube c from an elevated atmospheric fountain.The lower part of this tube or annular space is filled with water up toabout the line y y, and a screw-plug7 d, or other suitable stopper, isprovided that is removed for introducing the water or for indicating theheight to which it is to be filled. As the hydrocarbonliquid runs fromthe reservoir through the tube c it displaces the water sufficiently byits hydrostatic pressure to pass said water and iiow up in the oil-spaceabove the water and keep the wick saturated, and this operation takesplace from time to time as the fluid is burned up, the water constantlyintervening between the oil that is being consumed and that in thereservoir, and in this manner risk of accident is lessened and thereservoir kept cool. The air-tube a has a screw upon its exteriorsurface receiving the screw or stud upon the wick-thimble f, so as to beraised or lowered by the revolution of the thimble around said air-tube.The slotted cylinder h,

.connected with the removable chimney-holder k, has been used to turnthis wick-thimble, but the stud t' has usually been simply a straightpin, that sometimes slipped out of the slot and became disconnected. Weprevent this by making a flat head upon the pin i wider than the slot inthe tube h, so as to prevent the pin drawing out of the slot and inorder to allow of the insertion of the headed pin into the slot, thereis an enlargement of the slot in the tube h, as shown at 2, Fig. l,through which the pin t' is entered before the thimble is Ainserted overthe air-tube. The upper and lower ends of the slot in the tube hareclosed, so that it is imposible for the thimble-pin 1'. to becomedisconnected when in use.

Vde claim as our invention-Q 1. The water-space at the junction of thetubes c and b for separating, by a non-combustible fluid, thehydrocarbon that is being consumed from that in the supply-reservoir,substantially as set forth.

2. The pin t' upon the wick-thimble provided with a head, in combinationwith the slotted tube h, having an opening for the head of the pin topass through, as and for the purposes set forth.

Signed by us this 21st day of February, 187 2.

C. F. A. HINRICHS.

Witnesses: RUDOLPH KNOPP.

GEO. T. PINCKNEY, v a CHAs. H. SMITH.

